=Distribution.=--This species as understood by Sargent ranges from West Virginia to Indiana and south to Florida and west to Alabama. In Indiana it is confined to counties near the Ohio River. Specimens are in the writer's herbarium from Dearborn, Ripley, Switzerland, Jefferson, Clark, Harrison, Crawford, Perry, southeastern Dubois and east Spencer Counties. Practically in all of its range in Indiana it is found on the tops of high bluffs along streams or on the slopes of deep ravines. It is an infrequent to a common tree where found. In general in the counties just mentioned it supplants the other species of _Tilia_. It was reported from Wayne County by Phinney, and Schneck says a single tree was found near the mouth of White River. The last named tree may be _Tilia neglecta_ which is said to be found just west in Illinois. [Illustration: Plate 119. TILIA HETEROPHYLLA Ventenat. White Basswood. (× 1/2.)] =Remarks.=--Wood and uses similar to that of the preceding species. In Indiana the species are not commercially separated. A satisfactory division of the species of _Tilia_ of the United States has long been a puzzle. C. S. Sargent[65] has recently published his studies of the species and credits Indiana with two species and one variety. His range of _Tilia neglecta_ might include a part of Indiana, and it may be that the pubescent forms of _Tilia glabra_ in our area should be referred to that species. Specimens No. 28043 and 28047 in the writer's herbarium collected from trees on the high bluff of Graham Creek in Jennings County, Sargent refers to =Tilia heterophylla= variety =Michauxii= Sargent. While Sargent's key to _Tilia_ quite distinctly separates the species and varieties, yet when specimens are collected from an area where the species overlap and seem to intergrade, the task of referring a specimen to the proper species or variety is not an easy one. In fact the writer acknowledges his inability to satisfactorily classify our forms of _Tilia_, and the present arrangement should be accepted as provisional. CORNÀCEAE. The Dogwood Family. Trees or shrubs; leaves simple, alternate, opposite or whorled; fruit mostly a drupe, 1 or 2 seeded. Leaves alternate; flowers of two kinds, the staminate in heads, 5-parted; stigmas lateral. 1 Nyssa. Leaves opposite; flowers perfect, 4-parted; stigmas terminal. 2 Cornus. =1. NYSSA.= The Tupelos.